Australia's water market is heralded as the best in the world, but it’s often a sore point for people who work the land, driving up costs and uncertainty when water is scarce. 

It’s the invisible hand, designed to move our precious blue gold, it’s highest and most productive use. 

But decades on from the market reform, who's interests is the market working in. 

This week on water water we hear from Adjunct Professor Scott Hamilton, author of "Sold Down the River: How Robber Barons an Wall street traders corners the Water Market" 

Watch Watch is produced by Broken Hill Community radio 2DRY.